diff --git a/extras/sample-cron-scripts/process.sh b/extras/sample-cron-scripts/process.sh
index 976d0de..0e1bd08 100755
--- a/extras/sample-cron-scripts/process.sh
+++ b/extras/sample-cron-scripts/process.sh
@@ -13,16 +13,20 @@ if ! flock -n -x 99 ; then
 fi
 trap 'rm -f "$LOCKFILE"' 0
 
-# sinefit on phase A voltage
+# redirect stdout/stderr to log, but keep it on the console too
+exec >  >(tee /home/nilm/data/process.log)
+exec 2> >(tee -a /home/nilm/data/process.log >&2)
+
+echo "sinefit on phase A voltage"
 nilm-sinefit -c 5 /sharon/raw /sharon/sinefit
 
-# prep on A, B, C with appropriate rotations
+echo "prep on A, B, C with appropriate rotations"
 nilm-prep -c 1 -r 0 /sharon/raw /sharon/sinefit /sharon/prep-a
 nilm-prep -c 2 -r 120 /sharon/raw /sharon/sinefit /sharon/prep-b
 nilm-prep -c 3 -r 240 /sharon/raw /sharon/sinefit /sharon/prep-c
 
-# decimate raw and prep data
+echo "decimate raw and prep data"
 nilm-decimate-auto /sharon/raw /sharon/prep*
 
-# run cleanup
+echo "run cleanup"
 nilm-cleanup --yes /home/nilm/data/cleanup.cfg